Compare 21/72 and 27/75
21/72 is smaller than 27/75
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 72 and 75 is 1800
Next, find the equivalent fraction of both fractional numbers with denominator 1800 - For the 1st fraction, since 72 × 25 = 1800,
21/72 = 21 × 25/72 × 25 = 525/1800 - Likewise, for the 2nd fraction, since 75 × 24 = 1800,
27/75 = 27 × 24/75 × 24 = 648/1800 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 525/1800 < 648/1800 or 21/72 < 27/75
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 42/72 and 27/75 21/72 and 54/75 63/72 and 27/75 21/72 and 81/75